
Pue Pandin Party leader Suwit Khunkitti and Chart Thai Party leader Banharn Silapa-archa already arrived at the restuarant.
It is still unclear whether Samak, as leader of People Power Party, will join the meeting.
Meanwhile police have tried to ask protesters to move to a new location and try their best not to use force to disperse the rally, Channel 7 reported.
The station said the top police officers resolved to talk to the leaders of the People's Alliance for Democracy to change the rally location intead of using force against the protesters.
Deputy police spokesman Pol Maj Gen Surapol Thuanthong said police were talking to the leaders of the People's Alliance for Democracy to help them relocate to a new rally site.
Surapol said police offered to help them move the stage and al belongings of the protesters to a new site of their choice.
He said the PAD could continue their rally at the People's Ground at the Bangkok Metropolitan Administration's head office, Chatuchak Park or Lumpini Park.
The spokesman said police would not use force against the protesters because police did not regard them as criminals.
However, if the negotiation fails to come up with an agreement and the protest caused damages to other people, it would be up to the prime minister to decide whether to order police to use force, Surapol said.